
Mind & Matter
Whether food, drugs or ideas, what you consume influences who you become. Learn directly from the best scientists & thinkers alive today about how your mind-body reacts to what you feed it.The weekly M&M podcast features conversations with the most interesting scientists, thinkers, and technology entrepreneurs alive today.Not medical advice.At M&M, we are interested in trying to figure out how things work, not affirming our existing beliefs. We prefer consulting primary rather than secondary sources and independent rather than institutional voices. If we encounter uncomfortable truths or the evidence suggests unfashionable ideas may be valid, so be it.As the host, my aim is to help you better understand how the body & mind work by curating & synthesizing information in a way that yields science-based insights that you can choose to use or disregard in your own life. Taking ownership of your health starts with taking ownership of your information diet.I am motivated to connect the dots and distill general principles from what I learn, preferring to ask questions and play devil’s advocate to debating or incessantly pushing my own viewpoint.My beliefs:Taking ownership of your health starts with taking ownership of your information diet.All knowledge is provisional and we must work hard to prevent ourselves from becoming attached to our favorite ideas & preferred conclusions.Wisdom comes from an iterative, trial-and-error process of learning and unlearning. Letting go of pre-conceived notions can be painful, but pain is information.Sometimes modern discoveries teach us we must unlearn received wisdom. Other times, modern information overload & historical chauvinism cause us to forget ancient wisdom which stills applies. The framework for learning that I embody is inspired by three Ancient Greek maxims inscribed in the Temple of Apollo at Delphi:“Γνῶθι σεαυτόν” (Know thyself)“Μηδὲν ἄγαν” (Nothing in excess)“Ἐγγύα πάρα δ Ἄτα” (Certainty brings insanity)
Latest episodes

Nov 13, 2024 • 1h 12min
Psychedelics, Functional Neuroimaging & the Human Brain | Joshua Siegel | 188
Joshua Siegel, a psychiatrist and systems neuroscientist at NYU, explores the fascinating realm of psychedelics and their impact on the brain. He discusses how fMRI technology unveils the intricate relationship between neural activity and blood flow. Siegel delves into the role of the serotonin 2A receptor and its significance in understanding psychedelics. The conversation also highlights the challenges of subjective experiences in clinical trials, revealing how individual expectations can shape treatment outcomes.

Nov 10, 2024 • 1h 9min
Synesthesia & Effects of Digital Technology on Brain & Mental Health | Richard Cytowic | 187
Send us a textAbout the guest: Richard Cytowic is a neurologist, poplar science writer and professor at the George Washington University. Episode summary: Nick and Dr. Cytowic discuss: the effects of smart phones and social media on the developing and adult brain; artificial blue light vs. broad spectrum natural light; attention & addiction to technology; sensory overstimulation & “virtual autism”; synesthesia and multimodal sensory perception; and more.Related episodes:M&M 78: Nature vs. Nurture, Neurogenetics, Personality, Autism, Schizophrenia, Synesthesia, Perception, Agency & Free Will | Kevin Mitchell*This content is never meant to serve as medical adviceSupport the showAll episodes, show notes, transcripts, and more at the M&M Substack Affiliates: KetoCitra—Ketone body BHB + potassium, calcium & magnesium, formulated with kidney health in mind. Use code MIND20 for 20% off any subscription (cancel anytime) Lumen device to optimize your metabolism for weight loss or athletic performance. Code MIND for 10% off Readwise: Organize and share what you read. 60 days FREE through link SiPhox Health—Affordable at-home blood testing. Key health markers, visualized & explained. Code TRIKOMES for a 20% discount. MASA Chips—delicious tortilla chips made from organic corn & grass-fed beef tallow. No seed oils or artificial ingredients. Code MIND for 20% off For all the ways you can support my efforts

Nov 6, 2024 • 1h 9min
Kidney Biology: Simple Diet & Lifestyle Practices for Kidney Health | Thomas Weimbs | 186
Send us a textAbout the guest: Thomas Weimbs, PhD is a biologist at UC-Santa Barbara whose lab studies kidney function in health and disease.Episode summary: Nick and Dr. Weimbs discuss: basic kidney biology; kidney stones and their causes, including dietary oxalates and fructose; the kidney damaging effects of common pharmaceuticals like Ibuprofen; the beneficial effects of BHB and ketosis for kidney health; the myth that high protein intake is bad for the kidney; kidney diseases and their causes; and more.Full version available on Substack and YouTube.Related episodes:M&M 158: Ketosis & Ketogenic Diet: Brain & Mental Health, Metabolism, Diet & Exercise, Cancer, Diabetes | Dominic D'AgostinoM&M #139: Metabolic Switching, Fasting, Ketosis, Neuroplasticity, Diet & Neurodegenerative Disease | Mark Mattson*This content is never meant to serve as medical adviceSupport the showAll episodes, show notes, transcripts, and more at the M&M Substack Affiliates: KetoCitra—Ketone body BHB + potassium, calcium & magnesium, formulated with kidney health in mind. Use code MIND20 for 20% off any subscription (cancel anytime) Lumen device to optimize your metabolism for weight loss or athletic performance. Code MIND for 10% off Readwise: Organize and share what you read. 60 days FREE through link SiPhox Health—Affordable at-home blood testing. Key health markers, visualized & explained. Code TRIKOMES for a 20% discount. MASA Chips—delicious tortilla chips made from organic corn & grass-fed beef tallow. No seed oils or artificial ingredients. Code MIND for 20% off For all the ways you can support my efforts

Oct 31, 2024 • 43min
Self-Experimentation (n=1) in Metabolic Health, Lipid-Energy, Trust in Medical Institutions | Nick Norwitz | 195
Send us a textFull version available on Substack and YouTube.About the guest: Nick Norwitz, PhD received his PhD in Physiology at Oxford University and is finishing his MD degree at Harvard Medical School. He is also an independent content creator focused on making metabolic health mainstream.Episode summary: Nick and Dr. Norwitz discuss: blood lipids & cholesterol; high cholesterol levels and what they can mean for different people; the “lean mass hyper-responder” phenotype to carb restriction; ketogenic & carnivore diets; public trust in medical & science institutions; n=1 (“n of one”) science experiments; and more.Related episodes:M&M 158: Ketosis & Ketogenic Diet: Brain & Mental Health, Metabolism, Diet & Exercise, Cancer, Diabetes | Dominic D'Agostino*This content is never meant to serve as medical adviceSupport the showAll episodes, show notes, transcripts, and more at the M&M Substack Affiliates: KetoCitra—Ketone body BHB + potassium, calcium & magnesium, formulated with kidney health in mind. Use code MIND20 for 20% off any subscription (cancel anytime) Lumen device to optimize your metabolism for weight loss or athletic performance. Code MIND for 10% off Readwise: Organize and share what you read. 60 days FREE through link SiPhox Health—Affordable at-home blood testing. Key health markers, visualized & explained. Code TRIKOMES for a 20% discount. MASA Chips—delicious tortilla chips made from organic corn & grass-fed beef tallow. No seed oils or artificial ingredients. Code MIND for 20% off For all the ways you can support my efforts

Oct 30, 2024 • 1h 4min
Sugar & Sweeteners: Are They Really Addictive or Unhealthy? | Nicole Avena | 185
Send us a textFull version available on Substack and YouTube.About the guest: Nicole Avena, PhD is a neuroscientist at Mount Sinai. She studies the effects of sugar and diet on animal behavior and the brain. She is also the author of, “Sugarless.”Episode summary: Nick and Dr. Avena discuss: drug addiction vs. food addiction; glucose, fructose & artificial sweeteners; the extent to which sugar consumption can drive dependency & withdrawal; fructose metabolism & live health; sweetness & palatability; ultra-processed foods; and more.Related episodes:M&M 140: Obesogens, Oxidative Stress, Dietary Sugars & Fats, Statins, Diabetes & the True Causes of Metabolic Dysfunction & Chronic Disease | Robert Lustig*This content is never meant to serve as medical adviceSupport the showAll episodes, show notes, transcripts, and more at the M&M Substack Affiliates: KetoCitra—Ketone body BHB + potassium, calcium & magnesium, formulated with kidney health in mind. Use code MIND20 for 20% off any subscription (cancel anytime) Lumen device to optimize your metabolism for weight loss or athletic performance. Code MIND for 10% off Readwise: Organize and share what you read. 60 days FREE through link SiPhox Health—Affordable at-home blood testing. Key health markers, visualized & explained. Code TRIKOMES for a 20% discount. MASA Chips—delicious tortilla chips made from organic corn & grass-fed beef tallow. No seed oils or artificial ingredients. Code MIND for 20% off For all the ways you can support my efforts

Oct 27, 2024 • 1h 7min
Endocrine Disruptors & Metabolism: Microplastics, BPA, Estrogen, Insulin, Pancreas & Metabolic Dysfunction | Angel Nadal | 184
Angel Nadal, a Spanish biologist specializing in endocrine disruptors and pancreatic functions, discusses the intricate relationship between microplastics, BPA, and hormone signaling. He dives into how these disruptors impact insulin signaling and metabolic health, emphasizing their effects on both males and females. The conversation touches on the critical role of estrogen in metabolism and how BPA can influence developmental outcomes during pregnancy. Nadal also highlights sex differences in responses to endocrine disruptors, offering insights into gender-specific health implications.

Oct 23, 2024 • 59min
Calorie Restriction & Fasting: Aging, Immunity, Health Biomarkers, Stress, Genetics | Gary Churchill | 183
Send us a textAbout the guest: Gary Churchill, PhD is a statistician & geneticist at the Jackson Research laboratory in Maine. His lab uses a systems approach to investigate the genetics of complex biological traits in health & disease.Episode summary: Nick and Dr. Churchill discuss: his recent papers looking at the effects of caloric restriction & intermittent fasting on nearly 1,000 genetically diverse mice; how dietary restrictions affect longevity, metabolic health, immunity, and hundreds of biomarkers; the role of genetics vs. diet in aging; and more.Related episodes:M&M #139: Metabolic Switching, Fasting, Ketosis, Neuroplasticity, Diet & Neurodegenerative Disease*This content is never meant to serve as medical advice.*Full episode available free on Substack & YouTube.Support the showAll episodes, show notes, transcripts, and more at the M&M Substack Affiliates: KetoCitra—Ketone body BHB + potassium, calcium & magnesium, formulated with kidney health in mind. Use code MIND20 for 20% off any subscription (cancel anytime) Lumen device to optimize your metabolism for weight loss or athletic performance. Code MIND for 10% off Readwise: Organize and share what you read. 60 days FREE through link SiPhox Health—Affordable at-home blood testing. Key health markers, visualized & explained. Code TRIKOMES for a 20% discount. MASA Chips—delicious tortilla chips made from organic corn & grass-fed beef tallow. No seed oils or artificial ingredients. Code MIND for 20% off For all the ways you can support my efforts

Oct 19, 2024 • 1h 12min
Neural Basis of Language in the Human Brain | Ev Fedorenko | 182
Send us a textAbout the guest: Ev Fedorenko is a neuroscientist at MIT. Her lab studies the neural basis of language, speech, and thought in the human brain.*Full episode available free on Substack & YouTube.Episode summary: Nick and Dr. Fedorenko discuss: the relationship between language and thought; the extent to which language is for thinking vs. communication; Noam Chomsky’s Universal Grammar theory; Sapir-Whorf hypothesis; language acquisition & language learning; language networks in the brain; neuroanatomy & brain lateralization; large language models (LLMs) & machine intelligence; and more.Related episodes:M&M #141: Evolution, Language, Domestication, Symbolic Cognition, AI & Large Language ModelsM&M #20: Language, Symbolic Cognition, Evolution, Origins of the Human Mind | Terrence Deacon*This content is never meant to serve as medical advice.Support the showAll episodes, show notes, transcripts, and more at the M&M Substack Affiliates: KetoCitra—Ketone body BHB + potassium, calcium & magnesium, formulated with kidney health in mind. Use code MIND20 for 20% off any subscription (cancel anytime) Lumen device to optimize your metabolism for weight loss or athletic performance. Code MIND for 10% off Readwise: Organize and share what you read. 60 days FREE through link SiPhox Health—Affordable at-home blood testing. Key health markers, visualized & explained. Code TRIKOMES for a 20% discount. MASA Chips—delicious tortilla chips made from organic corn & grass-fed beef tallow. No seed oils or artificial ingredients. Code MIND for 20% off For all the ways you can support my efforts

Oct 15, 2024 • 1h 4min
Neurosurgery, Blood-Brain Barrier, Ultrasound Technology for Brain Diseases & Disorders | Nir Lipsman | 181
Send us a textAbout the guest: Nir Lipsman, MD, PhD is a neurosurgeon and neuroscientist at the University of Toronto.Episode summary: Nick and Dr. Lipsman discuss: neurosurgery; the blood-brain barrier and how it works; using focused ultrasound technology to non-invasively treat patients; regulatory impediments to clinical research; costs, constraints, and future applications of ultrasound tech for treating psychiatric conditions; and more.Related episodes:M&M #168: Sleep: Neural Circuits, Orexin/Hypocretin, Hypothalamus, Neuromodulators, Stress & Cortisol, Sleep Drugs & Ultrasound Technology | Luis de Lecea*This content is never meant to serve as medical advice.Support the showAll episodes, show notes, transcripts, and more at the M&M Substack Affiliates: KetoCitra—Ketone body BHB + potassium, calcium & magnesium, formulated with kidney health in mind. Use code MIND20 for 20% off any subscription (cancel anytime) Lumen device to optimize your metabolism for weight loss or athletic performance. Code MIND for 10% off Readwise: Organize and share what you read. 60 days FREE through link SiPhox Health—Affordable at-home blood testing. Key health markers, visualized & explained. Code TRIKOMES for a 20% discount. MASA Chips—delicious tortilla chips made from organic corn & grass-fed beef tallow. No seed oils or artificial ingredients. Code MIND for 20% off For all the ways you can support my efforts

Oct 11, 2024 • 1h 20min
Mother-Infant Bonding, Maternal Care & Breastfeeding, Neural Basis of Hunger & Social Behavior | Marcelo Dietrich | 180
Send us a textAbout the guest: Marcelo Dietrich, MD, PhD is an associate professor in Comparative Medicine & Neuroscience at Yale University, where his lab studies the neural basis of behavior in mammals.Episode summary: Nick and Dr. Dietrich discuss: maternal care behavior, mother-infant bonding, and feeding in infant mammals; neural circuits regulating hunger & satiety; brain development & early social learning; behavioral variability among individuals; and more.Related episode:M&M #108: Monogamy, Sexual & Parental Behavior, Social Attachment, Oxytocin, Sex Hormones, Childhood Psychosis, Menopause & Brain Development | Devanand Manoli*This content is never meant to serve as medical advice.Support the showAll episodes, show notes, transcripts, and more at the M&M Substack Affiliates: KetoCitra—Ketone body BHB + potassium, calcium & magnesium, formulated with kidney health in mind. Use code MIND20 for 20% off any subscription (cancel anytime) Lumen device to optimize your metabolism for weight loss or athletic performance. Code MIND for 10% off Readwise: Organize and share what you read. 60 days FREE through link SiPhox Health—Affordable at-home blood testing. Key health markers, visualized & explained. Code TRIKOMES for a 20% discount. MASA Chips—delicious tortilla chips made from organic corn & grass-fed beef tallow. No seed oils or artificial ingredients. Code MIND for 20% off For all the ways you can support my efforts